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G. PURVIS.

SOOT EJECTOH. APPLICATION FILED Au ;.12.1918.

Patented Julie 3, 1919.

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GEORGE PUR'VIS, OF DETRGET, MICHIGAN.

SOOT-EJ'ECTOR.

application. inea august is, 191s.

To all whom t may concern' Be it known that l, GEORGE ltmvis, a citizen of the United States of America, residing at Detroit, in the county of Wayne and State of Michigan, have invented certain new and useful improvements in Soot- Ejectors, of which the following is a specification, reference being had therein to the accompanying drawings.

ln my pending a plication` filed .l une 7, 1918, Serial No. 231i, 98 there is disclosed an ash ejector especially designed for Hue boilers of the marine type, for removing fine ashes and soot from smoke fiues and smoke boxes, particularly .the latter. ln this pending application, the soot ejector may be considered as of the oscillatory type in contradistinctionto the. subject matter of this application, which is directed to soot and ash removing means that may be considered reeiprocatory, yas such movement is imparted to the device to thoroughlyv cleanse thc bottom of a smoke box. y I

The object of the present invention is to provide soot and ash removing means applicable to either end of a horizontal flue marine boiler, preferably at the forward end of the boiler so that a fireman or attendant of a boiler, from time to time and without a cessation in the operation of the boiler, may use the apparatus to remove soot and such other matter that may accumulate in the smoke boX or usual chamber at the rear end of the boiler.

rlhe manner in which l attain the above and other objects will hereinafter appear, and reference will now be had to the drawing, wherein Figure 1 is a longitudinal sectional view of a conventional form of marine boiler provided with an ash and soot removing apparatus in accordance with this invention;

Fig. 2 is a front elevation of the same; Fig. 3 is a perspective view of a soot collecting head, and j Fig. l is a longitudinal sectional View of I, a portion of a boiler showing a portion of the apparatus operatable from the rear end of the boiler.

As illustrating an installation of the ash and soot removing apparatus, l have shown a conventional form of horizontal Hue marine boiler as consisting of a combustion chamber 1 having a door 2, an ash pit 3 having a door 4, a bridge wall 5 assisting in Specification of Letters 'Eatena Serial No. 249,424.

"supporting gratos 6, and a smoke box 7 communicating with Huss 8 and a stack flue 9.

Extending through the front wall 10 of the combustion chamber 1 at one side of the ash pit door 4l is a rcciprocatory pipe 11 which has the rear end thereof extending through the bridge wall 5 into the smoke box 7, and the forwarder outer end of the pipe 11 rests on a bracket 12 adjacent the doorway of the ash pit 3.

The inner orrear end of the reciprocatory pipe 11 is angular or provided with a lateral branch 13 connected to a nipple 14 of a hollow sector shaped collecting head 15 that normally rests upon the bottomof the smoke box 7. 'As the bottom wall of the smoke box 7 is semi-cylindrical, the lower edges of the sector shaped head 15 conforms to the' wall ofthe smoke box, and the lower edges of said head are scalloped, notched or suitably recessed, as at i6, so that with the head resting on the bottom of the smoke box there will be sufiicient apertures for ashes and soot to be drawn into said head.

rl'he scalloped or notched lower edges o the head 15 also serve two other purposes, namely, that of providing a plurality of projections which will scrape and remove any incrustations on the bottom of the smoke box, and prevent a complete vacuum in the hollow head l5 which would retard va lreciprocable movement of the same. As the head 15 provides two converging walls terminating at'the nipple 14, the ashes or soot within the head will gain impetus when approaching the 'nipple and may be expeditiously removed through the pipe 11 without any danger of said pipe becoming clogged.

On the outer or forward end of the reciprocatory pipe 1l is an elbow 17 having suitable handles 18 and a suitable valve 19 the former lpermitting of the pipe 11 being manually reciprocated andthe latter permitting of said pipe being shut 0E relative to its source of suction.

As shown in Fig. 2the marine type of boiler includes two combustion chambers and consequently two smoke boxes, but irrespective of the number of boilers, a single suction or exhaust pump 20 is provided for removing the ashes and soot from the boilers. rlhe pump 20 is of a conventional Vform adaptedto be driven by a motor 21 and said pump has an exhaust pipe 22 to the stack or stacks of the boilers or to a suitable collecting receptacle. As line ashes and soot are in demand by fertilizer and chemical manufacturers, the exhaust pipe 22 may lead to collecting bins or receptacles so that the ashes and soot maybe saved instead of being discharged to the atmosphere.

The exhaust pump 2O has a pipe and branches 23 extending to the boiler and connected by hose orI other flexible connections 24 to thevalves 19, said valves permitting o-f the soot removing units being separatively operated. With the pump 20 in operation and one of the valves being open, it is o nly necessary for the fireman or attendant ofthe boiler` to grip the handles 18 and reciprocate the pipe 1l, said pipe causing the collecting head l5 to move back and forth on the bottom of the smoke box 7 and collect all the ashes and soot therein. By removing the ashes and soot, from time t0 time, there is less liability of the soot accumulating in the flues 8 or the bottom of the stack flue 9, consequently a better draft is obtained through the smoke box and the efiiciency of the boiler materially increased.

As shown in Fig. 4, the rear Walls 25 of the boiler may be provided with a sleeve or litting 26 through which extends an exhaust pipe 27 having the end thereof provided with an ash and soot collecting head 28,

similar to the head' l5. It is therefore possible to install the apparatus at the rear end therefrom and facilitate reciprocating. said head.

2. In a boiler having ash pits and smoke boxes,l a soot collecting head in each box centrally thereof and adapted to mechancated in said smoke box. A

4. In a boiler having a smoke box, a removed by said pump and said head reciprociprocator-y exhaust pipe extending therein, i

and an ash and soot collecting head onthe inner end of said pipe and normally resting on the bottom of said smoke box, said head havingvwalls and being sector shaped With an open end conforming in shape to thev bottom Wall of said smoke box and the Walls of said head being recessed to establish com- 1rrxlmnication between said smoke box. and said 5. The combination with a boiler having smoke boxes, ash pits'and bridge Walls, of reciprocatory pipesextending through the front Wall of the boiler, and through said bridge Wall at the sides of the ash pits and into the smokeboxes, collecting heads on said pipes in said smoke boxes and extending toward the bottom of each box, an exhaust pump in communication with said pipes, means adapted for independently controlling the communication between said sov pump and each said pipe, and means carried by each pipe adapted to facilitate manually reciprocating said pipe..

In testimony whereof I ailix my signature in the presence of two Witnesses.

GEORGE PURVIS.

Witnesses:

f KARL H. BUTLER,

ANNA M. Dorn. 

